True ∑,

Something I've been thinking about for a little bit now. And keep in mind, this is speculation. So don't take this as any form of canon...

But taking into account Sigma, the First Reploid. Born of Cain's latest Circuitry designs... We must assume that Cain had at least 1 prototype before the First Reploid was born. I'll call him Proto ∑.

Since Cain had to have something to experiment on, in order to accurately calculate the Circuitry and to attempt closer mimicry of the Suffering Circuit (this assuming the SC is an actual plug-in device instead of software).

However, no matter what his experiments were intended on, the result was Sigma. The First Reploid: the one meant to be uncorrupted to result in a Maverick. He was the Hunter Leader, whom answered to Cain only. He became the superior Hunter, cunning tactician, and combat specialist. Everything Sigma is came from Cain's study of X, Light's blueprints and Cain's understanding of technology. So there would seemingly be a Proto-Reploid consisting of very similar measures.

After Sigma's Rebellion and initiation of his Insurrection, Sigma became an enemy to humanity. And this would have affected Cain as a form of 'ultimate Failure'. Intention turned against the intended.

Next, taking a step closer to X4, after the Doppler incident, and birth of the 'Perfect Soldier' project. We can assume Cain had at least some handling with the project. Since Sigma was the Original Reploid, and was nearly the Perfect Soldier, Cain's work would have been obtained and revised in order to produce said qualities. Yet, since this resulted in counter-action within necessary components, it resulted in sibling reploids: Colonel and Iris.

If we take that 'Perfect Soldier' project into account (regardless of it's ending by Hunter hands), and Sigma's original purpose... We could guess that it is possible that the Proto ∑ could have been recovered at some point, revised with protocol developed from Colonel and Iris, and after such revision we could dub the new Reploid 'True Sigma'. Especially after Signas, being the 'Next of Command of the Hunters' having specific ties with Sigma's original hunter Place.

The result being True Sigma, we could further speculate that True Sigma could be operable as an Anti-Sigma agent. One to buy researchers time in order to research the Sigma Virus. And with True Sigma being of new design based on old, the Virus wouldn't have much of an effect. And thus would be a good combatant against Virus Sigma.

To sum, Proto ∑ led to Sigma. Perfect Soldier project led to information of proper measures, Sigmas took over for Hunter Head, and thus obtaining Proto ∑ and reinventing him led to True Sigma. A counter Sigma agent.

Thoughts?